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86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
package daemon
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import (
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"github.com/docker/docker/engine"
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"github.com/docker/docker/graph"
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"github.com/docker/docker/pkg/parsers"
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"github.com/docker/docker/runconfig"
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)
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func (daemon *Daemon) ContainerCreate(job *engine.Job) engine.Status {
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var name string
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if len(job.Args) == 1 {
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name = job.Args[0]
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} else if len(job.Args) > 1 {
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return job.Errorf("Usage: %s", job.Name)
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}
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config := runconfig.ContainerConfigFromJob(job)
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if config.Memory != 0 && config.Memory < 524288 {
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return job.Errorf("Minimum memory limit allowed is 512k")
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}
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if config.Memory > 0 && !daemon.SystemConfig().MemoryLimit {
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job.Errorf("Your kernel does not support memory limit capabilities. Limitation discarded.\n")
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config.Memory = 0
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}
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if config.Memory > 0 && !daemon.SystemConfig().SwapLimit {
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job.Errorf("Your kernel does not support swap limit capabilities. Limitation discarded.\n")
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config.MemorySwap = -1
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}
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container, buildWarnings, err := daemon.Create(config, name)
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if err != nil {
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if daemon.Graph().IsNotExist(err) {
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_, tag := parsers.ParseRepositoryTag(config.Image)
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if tag == "" {
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tag = graph.DEFAULTTAG
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}
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return job.Errorf("No such image: %s (tag: %s)", config.Image, tag)
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}
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return job.Error(err)
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}
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if !container.Config.NetworkDisabled && daemon.SystemConfig().IPv4ForwardingDisabled {
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job.Errorf("IPv4 forwarding is disabled.\n")
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}
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container.LogEvent("create")
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// FIXME: this is necessary because daemon.Create might return a nil container
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// with a non-nil error. This should not happen! Once it's fixed we
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// can remove this workaround.
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if container != nil {
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job.Printf("%s\n", container.ID)
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}
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for _, warning := range buildWarnings {
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job.Errorf("%s\n", warning)
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}
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return engine.StatusOK
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}
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// Create creates a new container from the given configuration with a given name.
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func (daemon *Daemon) Create(config *runconfig.Config, name string) (*Container, []string, error) {
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var (
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container *Container
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warnings []string
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)
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img, err := daemon.repositories.LookupImage(config.Image)
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if err != nil {
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return nil, nil, err
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}
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if err := img.CheckDepth(); err != nil {
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return nil, nil, err
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}
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if warnings, err = daemon.mergeAndVerifyConfig(config, img); err != nil {
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return nil, nil, err
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}
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if container, err = daemon.newContainer(name, config, img); err != nil {
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return nil, nil, err
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}
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if err := daemon.createRootfs(container, img); err != nil {
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return nil, nil, err
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}
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if err := container.ToDisk(); err != nil {
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return nil, nil, err
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}
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if err := daemon.Register(container); err != nil {
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return nil, nil, err
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}
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return container, warnings, nil
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}
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